Swinging desk-shelf.



PATENTED MAY 8, 1906.

C. KEUK. SWINGING DESK SHELF. APPLIOATEDH FILED JAN. 2a, was

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GFKEGK, SWINGIEG DESK SHELF. unmumn FILED us. an. 1905.

PATENTEB Mi? 8, 1906.

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UNITED STATES PATENT OFFICE.

OHRlSTlAN KECK, OF CRESCENT SPRINGS, KENTUCKY, ASS'IGNOR TO THEGLOBE-WERNIUKE COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

SWINGFNG DESK-SHELF.

Pasadena 8, 1906.

Application filed January 26, 1&65. Serial No. 242,740.

To all whom it may concern.-

Be it known that I, Onnrs'rmn Knox, a citizen of the United States,residing at Cresccnt-Sprin s, in the county o f-Kenton and State ofentucky, have invented certain new and useiallmprovements in Swirl inDesk-Shelves, of which the following is aulfi clear, and exactdescription, reference being bad to the accom any-mg drawings, lemmingpart of this-s cation.

My inren on relates to that class of adjustable swinging shelves thatcan be applied to the corner of any ordinagiy desk and can be swungaround to the end the desk and let down out of the Way when not in use"and can be raised and locked to a horizontal osition andbe swung aroundto the front of desk easyreaeh of the person sitting at the desk. Suchshelves are found very convenient as a snppltal device to a desk andserve a variety ot purposes-such, for instance, as carrying atype-writer, a heavy book of reference, a ledger, card-index trays orcabinets, letter-files, or most anythingthat it is desirable to bringinto temporary use.

The object of my invention is to 1provide a shelf of this characterwhich shal be very simple in construction, strong without undue weight,cheap to manufacture, and which can be applied to any desk without timeor trouble or the aid of a. mechanic.

The novelty of m invention will be hereinar'ter set forth, an morespecifically pointed out in the claims.

In the accompanyingldrawings, Figure 1 is a perspective view oft ecorner of a roll-top desk, showing the application of my improved shelf.Fig. 2 is a front elevation of the same. Fig. 3 is a plan view of theshelf and a corner of the roll-top desk with the shelf attached andswung u to a horizontal position at the side of the ask in solid linesand swung around to the front of the desk in dotted lines. 4 is adiminished end clevation looking to the left of Fig. 2. Fi 5 is anenlarged side elevation of one o the knucklejoints locked. Fig. 6 is acorresponding view with the joint unlocked and broken. Fig. 7 is a planView of Fig. 5. Fig. Sis a bottom plan now of the locking-ring.

The same numerals of reference are used to indicate identical parts inall the figures.

, Suitably secured to the front and side of 6, to receive a sliding bar18,

the desk at its corner are two horizontal mpports 1 and 2, Figs. 1, 2,ands, andordinary screws ma be employed for this purpose. The ends 0these supportawhich staindat'an angle to the cornero the desk, as seenthe dotted lines in Fig. 3, terminate in to ular sockets 3, in which is"ournaled, so as to turn freely, a. vertical spin le 4, having ashoulder 5 to limit its upward movement, and a cup shaped disk 6,resting upon the lower support 2, with which it engages by rncnnsnfnotches 7, Figs. 2 and 8, the notches straddling the support and beveledon one side and the disk being preferably integral with the spindle 4.

Extending upward at an angle from near the lower end otthe s indle 4 isa brace-arm 8,and the to of boil the spindle and brace-arm, W ehare on alevel, are: ovided with perfiorated ears 9, which ey may be screwedto-the under si e of a bringing-sapport, or What I call thestnbshelfi--a narrow board 10,120 which the main shelf ll is securely hinged, asat 12, Fi 2.

To brace and secure hol the shelf 11, so that its surface she I be cwith the surface of the stub-shelf 10, I provide a pair of arms 13,ivoted, as at 14, to the under side of the s elf 11 on each side andnear its outer edge, as seen in Fi 2 and 4. These arms are parallel, andt eir lower ends are pivoted, as at 15, Figs. 5 and 6, to two othersimilar arms 16, the one farthest from the s indie bein bent inwardtoward the spine and hot being pivoted at their lower ends to the disk6, as seen in Fig. 4. The upper ends of the arms 16 project beyond theirpivotal points 15, so as to overlap the arms 13, and their ends areslotted, as at 17, Fig. ided in a slot 19, extending longitudinally 111each of the bars 13 and held in place by washers 20 upon its outer ends,and which bar when the arms 16 and 13 are brought into alinement by thelifting of the table 11 is slipped down into the slots 17 and forms alock, the whole structure comprisin what I call a knuckle-joint, and asa 't to revent the arms 13 from being raised too In h pins 21 on thearms 16 enter and engage s ots 22 in the arms 13, as seen in F' 5 and 6.

It will e observed that the spindle 4 is stepped inthe socket of thesupport 2 through IDD , and very durable, and to o the interposed disk6, and the weight of the shaft when one of the disk-notches engages saidsupport serves to hold the shelf locked in either of its adjustedpositionsnamely, that shown by the solid lines in Fig. 3, where theshelf is parallel with the front of the desk, or that shown by thedotted lines in the same figure, where the shelf is swung around for theuse of the occupant of the desk.

It will be observed that the top of the shelf is slightly below theusual slidlng shelf 23, which fits in a socket in the body of the desk.

It will be seen from the foregoing description and the illustrationsthat I have provided an adjustable swinging shelf which is exceedinglysimple in construction, is cheap, crate it in swin in it is onlynecessary to ift it very slightl y til the locking-notch is disengagedfrom the bracket 2, whenit may be turned freely, and to lower the shelf11 out of the way at the side of the desk it is only necessary to slidethe rod 18 out of the notches 17, whencthe knuckle-joint will be brokenand the shelf can be lowered to the position indicated by the dottedlines in Fi Having thus fully 5 I claim 1. In a swinging desk-shelf, thecombination of a vertical spindle, with a horizontal extension,journaled at the corner of the desk, a stub-shelf secured to the to ofsaid horizontal extension, a shelf hinge to said stub shelf, means forlocking said hinged shelf when raised to a. horizontal position and forpermitting the shelf to be lowered, and locking means between saidspindle and one of its ournals, substantially as described.

1. escribed my invention,

2. In a swinging desk-shelf, the combina* tion of a supporting-s indlejourraled to the corner of the desk an having longitudinal as well asrotary movement, a horizontal stubshelf secured to the to of saidspindle, a shelf hinged to said stublielf, means for lockin said hingedshelf when raised to a horizontfi osition and for ermitting the shelf tobe owered, and 100 ng means between said spindle and one of itsjournals, substantially as described.

3. In a swinging desk-shelf, the combination of a supportingindlejournaled to the corner of the desk and having longitudinal as well asrotary movement, a horizontal stubshelf secured to the to of saidspindle, a shelf hin ed to said stub-slielf, means for locking sair?hinged shelf when raised to a horizontal position and for permitting theshelf to be owered, and a dlsk fast upon said sindle with notches toengage a locking mem er on the desk, substantially as described.

4. The herein described swingin deskshelf com rising the supports 1 am?2, the spindle 4 ournaled therein with slight longitudinal movement, thearm 8 projecting from said spindle, the notched disk 6 fast upon said sindle and engaging the su port 2, the stubelf 10 fast u on the top 0 thespindle and arm 8, the shef 11 hinged to the stub shelf 10 and theknuckle-j ointed arms 13 and 16 hinged at their upper ends to the shelf11 and at their lower ends to the disk 6, substantially as and for thepur ose s ecified.

CH ISTI N KECK.

Witnesses:

EDWARD SUssnoRF, BESSIE K. LAvAN.

